Has anyone gone to Under Pressure Fabrication and Distribution in Westminster. I have 2 Supras that I want to get work done on and I want to know if anyone would recommend them.Please help!!!

Yes, Underpressure does some of the finest work! I have taken a few of my cars there.

I recently had some head work done at UPRD. It took longer than quoted, did not get the "before" pictures they took and they did not use my head studs that were sitting on the front floor. If I assume that they used the correct studs from their stock and the head work, which was outsourced to Valley Engine, was done properly, I would say they are average to good. Certainly you wouldn't want to take it to a Toyota dealer here in SoCal...
I have no experience with SP Engineering, but I was informed of a case were they botched a head job and that car was at UPRD being corrected.

Sp Engineering does not have the tools needed nor know how to do head work. They sent the head out to have some one else do it and make $$$ as the middle man.
I highly recommend Under Pressure. They are a much better shop than SPE from my own experience.

I know a friend of mine had nothing but problems with UPRD. He spent a lot of money ($10's of thousands) and he eventually had to redo the entire car. Based on this, I wouldn't go near them ever!