I totally understand, car-part.com, an engine and tranny can be had from the same yard for 600.
When you buy an entire car you get so many extras that save you ALOT of trips or purchases.
Bunneys- Our engine mounts run 150.00
Mcshank- we use either a griffin or an Afco radiator and a ford taurus fan (you heard me right!! a ford taurus!?) the hot rod world has been using these fans for years to cool some serious HP cars. they move so much air it drowns out the engine noise when they come on. we mod them of course to make them 2 inches thinner for a total of around 6 inches of radiator and fan. core support gets trimmed 3/4s of an inch on each side of factory radiator.
YVR- we use the factory 4 speed auto, a manual can be done. a couple companys make bellhousings and clutch kits ($$$) and no probs with ECU(factory wirig manuals are your freind!), you just have to be well versed in automotive wiring and reading said documents.
Bluefever- you are correct, 260 HP and 270 ft lb of torque on the SC(coupe) as well.
Toyotas #s are very conservative- we put an LS (stock) on the dyno and cosistantly got overe 280 HP and around the same torque #s and the torque comes on where you need it, nice and low to mid
side note- the Lexus LS400 alternator puts out 120 amps and the SC400 is 160 amps- now thats some serious juice, much better than say the 90 amp upgrades alot of peeps do. (and yes, I know the wiring needs to be upgraded to handle the amps- this isnt my first rodeo)