Had a customer come in recently who wanted to put an 8 stack setup on a Ford FE engine. Told him that it would cost about $10,000, it would be unreliable, and that he would eventually grow to hate it, but if that is what he wanted we could do it.
I love my 8 stack setup. drive it everywhere, runs & drives like a stock 440 , BUT if you dont know how to work on them, [ have to pay someone to dial it in] you are 100% correct, it took a lot of trial and error to get it good, just got back from a 25 mile drive, AC blowin cold & 110deg outside. LOVE IT
, the BEST thing I did to make it work better is a NON Contact TPS, WORLD of difference .