[leegreen]

If you have everything for the floor mount, just upgrading the master to two circuit / adding a booster if you go disk is probably simplest.

If you have nothing now and plan to DIY, retrofitting from a newer truck onto firewall is going to be easiest and cheapest. S10 pedal conversion has been talked about many times by the S10 frame swap crowd.

I worked on a few customer trucks with under floor masters back in the days when those sort of trucks were still daily beater status not collector stuff...under floor masters got the kind of maintenance you'd expect from something that is out of sight and out of mind. And they are a pain to work on compared to standing beside the truck.

If you are going manual trans but with a modern engine & trans, you are going to be figuring out how to make a clutch work and ripping apart the underfloor stuff anyway.

If your truck will be very low the under floor master presents some additional challenges with bleeding, needing drainback prevention etc