Here's my 72K10. Its got a 350 crate motor but I put GMPP vortec heads with a low end torque Comp Cam kit. Also put a TH400 in it with a NP205 transfer case hooked to a Gear Vendors overdrive. Gas tank is out of the cab with a fuel cell in the bed. The interior is soundproofed with leather Caddy power seats. Its no trailer Queen and sees plenty of time in the woods during hunting season. I love these old trucks!