doing a ls1 swap is high dollar and i dont think you would find a ls engine of any sort for 125 bucks.
to do a ls swap you have to have all kinds of shit.
if you find a engine for 125 its prob going to garbage 800 is usually for a decent 4.8.
ecm you will def have to have it programmed 250-500 no way around it.
exhaust manifolds and the exhaust its all going to have be made up for this swap they sell headers for older car swaps fiugre 500 at least there.
lt1 tank yes and then swap to different fuel pump 300 more.
custom motor mounts these are cheap at least at 50 bucks or so.
oil pan and custom pick up are a must 250 there.
unless you can find a 02 prior engine you need to swap the gas pedal for a dbw one.
your trans idk if it will work with the ls speed sensors and all if not you need something that will.
the brackets this big one too only one that works is one you need custom ac and ps ones look at a 250 at least here too.
now your gauges are mech you electric ones so figure new ones cheap is 300.
you can mod the stock harness and keep a clutch fan.
all the fuel lines will need redone add that in.
cheapest ls swap ive seen costed 1800 bucks it was very very many used parts and he got the engine free.
for that money you could build the sbb up to 400 hp 450 ft lbs and still tbi it for less.
bellhousing what trans is the stick? you could drop in a nv3500 from a fullsize but thats more money.
---------- Post added at 03:46 PM ---------- Previous post was at 03:39 PM ----------
http://ls1tech.com/forums/conversion...de-1500-a.html
thats as bare bones as it gets it cost and no ac. so i guess 1300 if you got the engine for 125 and didnt use ac.