Hi, new guy here

So I recently inherited an old 91 sierra that has been in the family longer than me. Amazed with the reliability, after sitting still through 2 winters it managed to start on the first try!

Currently the engine produces about 110-120bhp, how could I make this number slightly bigger?

not looking for anything crazy, just add a fewty bhp



Currently in the car resides an old N9E 8v 2.0i DOHC engine, replace or upgrade, maybe turbo?

Ive heard that engine conversions are popular with these cars, what would you guys suggest for my particular model? A pinto, zetec, duratec??

Any help would be appreciated