Not sure if it fits here exactly Stu but it does jive with your 'Transmission being the weak link' synopsis...
I bought my 87 GLHS new from Anaheim Dodge (about 35 miles from the Putnam Road Whittier Shelby production plant) and soon after befriended a certain 'perfomance parts manager' (that many of us here know
) in search of a few more HP. He showed me how to bleed the MAP line a little bit with a small nitrous jet mounted in a little section of 1/4 copper tubing(which we now know was a bad idea for the proper A/F ratio but it was a neat trick 'back then') to achieve 14PSI-ish. One day I drove up to the plant to see said certain PPM to go to lunch or something and while I was waiting outside in the lot, three suits came walking up and commented/asked about my red GLHS and how it got that way. I explained to them what the dealership had told me that they had a truckload of GLHS's and they were slow to sell them all so they painted this one to see if that would move it(it did! I picked it over the other black 87 GLHS they had
). So one of the suits says 'pop the hood' and I think I had it up about 3 seconds when one of them pointed to the MAP bleed and asked/said "WHAT IS THAT?? THE TRANSMISSION WON"T HANDLE THAT KID!" Feeling emabarassed and worried about my 2/24 warranty at that point I made some sheepish excuse about the line popping off and that was my fix, closed the hood as soon as possible and made myself scarce...
Weeks (or years) later that same PPM who was by now a buddy of mine talked about Shelby's testing of the Saines(AKA Chiclett) diff where they positioned a 525 equipped car with one wheel on clean pavement and the other on some sand, dumped the clutch at some stratospheric launch RPM and exploded the trans because of as he described it, 'the load being transfered to the case' from the Saines diff. Knowing what we know now many years later the 525 would have likely grenaded anyway with that type of test
Thanks for your input here Stu, I suspect you will have no problem getting the TM.com community to help you aquire the parts you seek for your new Daytona
Maybe create a 'wish list' of parts that the membership at large can PM you about what they have for you. I know I can personally fill some of that need