These turbos were built by Tim B (TRE Diesel Performance) using a new HTT HX35/12 hybrid and a new BHT3B/26 a new HTT Manifild and a 38mm TiAL external waste gate. These turbos spool very fast, primary lights at 14 psi total boost, towing with TST on 4 3 EGTs will stall <1200 degf. They are built to fit a 3rd gen and were designed to fit around my KORE shock towers, They are very compact and there is no reason they should'nt fit 1st and second gen trucks. The turbos now have about 6000 miles on them they have never been raced or pulled with, this is the reason i'm getting rid of them, they are just more than i need. The twins are still in my truck, as i can not afford to buy a new single untill i sell these, i will remove them as soon as i get someone interested. Email rducsh@charter.net or PM me with questions you can also call me at 757.409.8889 The truck dyno'd 504 rwhp with TST on 6x5 egts just over 1100 at 48 psi boost. These will make 60 psi with waste gate adjusment i have pegged my gauge. 3200.00 + shipping, local pick ups welcome. if you are local i will help install