Last year my Dad and I bought an unrestored '66 coupe (289,C4,PS). We have every single receipt from work that the original owner had done to the car (and I mean EVERY). And then we also have the 2nd owners "handful" of receipts. When we aquired the car, everything was original except for the C4 transmission, from what the receipt says, it's a rebuilt same year transmission.

Well, shortly after we bought it, the original exhaust plugged up (seriously, it was wheezing ) and we replaced it with some 40 series flowmasters and it growls now .

A few months later, the fruit jar master cylinder went out on my dad and fortunately he was at a low speed and was able to pump the pedal to stop (single bowls SUCK). Well anyways, more concerned about safety, we added a dual bowl '67 master cylinder and it brakes great with a piece of mind about our safety.

We also detailed the engine bay and painted certain areas where the paint was worn and peeling. The original paint (springtime yellow) is in great shape and still has that "original" shine look (not flat at all). I've updated the paint with Zaino Z-3 (for non-clearcoat finishes) and it shined even brighter.

The leaf springs were old and sagged so we replaced it with OE style 4-leaf stock height leafs. Also replaced the ORIGINAL SHOCKS. I can't confirm 100% that they were original but they were a little dark blue in color with a tiny very tiny shade of torquise. They were so worn that they didn't expand when compressed.

The interior is still original with a bench seat with only 2 small rips on the driver's side seat. We eventually plan to recover the bench seat someday.

The only repair to do on the car is to fix the minor dent on the passenger rear quarter.

My question is, did changing the master cylinder to dual chamber and changing the exhaust to flowmasters de-value the car at all? We don't participate in concours shows, but i'd like to keep the value as much as possible if/when we sell it. I know we can convert the master cylinder back and change the exhaust back if need be, but for now we're enjoying it .

Thanks.

Erik

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1966 Ford Mustang 2+2
Mine - Restomod in Progress

1966 Ford Mustang Coupe
Dad's - Original Unrestored

JOHN

This guy was a classic car appraiser and he knew where to look man!! He vary carefully inspected paint around the drip rails (you know, around the door). After about 1-2 minutes, he turned to my dad and I and said, "well I'll be darned, this is the original paint!!", he then asked us to pop the trunk. Looked at the spare tire instruction sticker underneath the decklid and saw that is was faded and somewhat crisp & bubbled, turned to us and said, "you guys are lucky!!" Regardless of the minor dent, he appraised the car at more than double what I paid for it!! He told us to get the dent fixed by someone who can knock it out perfectly and use little to no bondo. Then find a spotter who can spot paint a couple tiny dings. He said it's gonna be hard finding someone to do it, but they are out there and they are costly!! I'm still looking for the right person to do the job .

Erik