Go for the S-trim?

[Green92LX]

Hey all. A good friend of mine is selling his S-trim for a twin-turbo setup. My question is if I should just suck it up and buy the S-trim from him. The blower would be for the first car in my sig, so it would be pretty nasty. He said he would sell it to me for $1800 for everything, and help me install it. The blower has about 500 miles use max. It is an older v-1 that was rebuilt before he got it; the thing is mint and makes awesome power. The only things I would have to buy are an FMU and a 8LB pulley, because I wouldn't want to run the 15LB's that he ran. What do you guys think? And how much would it run me for the extra two items listed above? I just want the opinion of as many people as possible (I'm afraid of that little $hit that goes wrong when you go to the next step...)

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1992 5.0 LX, Edelbrock 6037 Heads, Cobra Intake,E-303, 1.6 Roller Rockers,65MM Holley TB, 75 MM Pro M Mass Air, 190 LPH FP w/ 24 lb injectors,BBK equal length shorties,offroad h-pipe,Mac Flowpath Mufflers, Pro 5.0, 3.73's,Motorsport "C" springs,welded subframe connectors, Ponies w/ 225/50 Nittos, 93 Cobra Spoiler

Daily driver: 89 Coupe with 205K plus, BBK shorties,offroad h-pipe,2-chamber flowmasters with dumps, cut and welded stock shifter...and it runs like a champ.