K, I finally got all the grit & grime off the stamp on the block of the motor in my 92 teg i recently picked up. It's a B18A1. I have also noticed, however, that 2 of the motor mount bolts are missing. Did this motor origionally come w/ the car? it's a GS, by the way. Also, what are some good, worth while mods to do to this motor? I know the basic i/h/e scenario, but is it worth upgrading the ignition system? what pistons/cams, etc are a good swap choice out of other b series motors?