Hi, welcome to my galery.
My sierra was made from 4x4 and 2wd cos versions, but still 2wd.
spec: std engine, little ported head, greens, t34.48, grA coil, 80mm custom exhaust, walbro pump 255lph, aluminium light propershaft...
peak 1.92bar, hold 1.75bar.
best 1/4mile = 13,2s on road tyres 225/45/17.
I'm waiting for large intercooler and siemens'55 from USA for installation MSD chip.
https://passionford.com/forum/album.php?albumid=615