Upgrade to 5 speed manual

[tucsonjwt]

I have a 1983 C20 454 BB with SM465 granny 4 speed with a gear vendor. The gear vendor is shot and the transmission is leaking from the front (although it still shifts OK.)

Rather than get a reman Gear Vendor and have the granny 4 speed rebuilt, I am considering having a modern 5 speed manual transmission installed.

What would you guys recommend for a transmission upgrade with minimal modification required. I will have to get a new driveshaft to replaced the shortened drive shaft for the Gear Vendor. i am looking for a 5 speed that might bolt up to the 454 BB I have without an adapter, or at least a low cost adapter that is not a cobbled together contraption.

A reman Gear Vendor with a new control unit is about $2K ($1250 for the GV unit, $400 for the control box, $120 for shipping with my core + labor to R &R.)