Thanks of the input. How about the T56 Magnum with the LSX 454? Good combination? What engine are you running? What recommendation would you give for the motor?

When done correctly modifying the transmission tunnel will not be noticeable to 99.999% of potential buyers. It will however correct driveline vibrations that will sink the value of the car.

From a resale standpoint the T56 should havery more appeal than most any other manual transmission.

Unless you're planning stroking bigger, I'd stick with the alum block engines. Plus the LSX is dang expensive and weighs about 130# more

Why do people even consider the LSX it's a BOAT ANCHOR! The block is 260LBS there is nothing "pro touring" about a heavy cast iron lump in the engine compartment:lostmarbles:

Your Pro Touring a legitimate 4speed1972 RS Z28? That's a pretty rare beast and if it is orange/black that's a primo color........I'd find a appreciative buyer and look for a RS donor if that's the body style you want........there were probably fewer than 500 RS 72 Z28s built.

It is one of 2575 built Z28s in 72', and you are right, there were estimated less than 500 RS's built that year. I have the Protect-O-Plate plate, two build sheets I found under the original carpet, but it was sequoia green w/white stripes and green interior.

I debated for years to restore or modify, but without the original drivetrain it didn't make financial sense to restore to original. It would never be #s matching the purist seek and expect.

Having an LSX 454 does not "disqualify" anyone from having a protouring car. If he wants that motor then I think it's an excellent choice for resale. A good portion of people that buy these cars will never see serious track time anyway. There are plenty of pro touring cars out there with iron blocks. That extra 130 pounds just means that my wife can't ride in the car with me on the track!