Yes
Yes (...but why?)
no
Of course not
Yes
yes
Yes (...but why?)
Not without extensive (and expensive) modification
yes you can but if you can put an ls1 why not put an LS2? get close to 500 horse power... if you can afford it
Cut the engine capartment out so it fits
The 1995 Z28 camaro has a v8 engine in it. That engine is a ctually a steel version of the corvette engine. Since there are 1995 camaros with v8 engines in them, you can probably fit a v8 into your car.
While anything is theoretically possible, the practical answer to this would be no.
Don't put a buick engine in a camaro. Instead, get a 350 LT1 (GM - corvette engine) for about 200 bucks used or 800 new. Sell the lesabre for this engine if you need to.