ok so my engine needs alot of work and a possible rebuild.... and when searching for a new engine for my truck i found this.....

its a 1992 4.3 Mercruiser that pushes out 275 H.P for $2,495

heres the thing i know that a mercruiser 262 intake will fit on a chevy 4.3 but my question is this: will this engine install in my truck? and is it worth it to get it and install it?

the other question is how hard would it be to get another 100-125hp out of this engine?