Take it from some one who nknows ex honda fanatic, Civics used to be good until the last run of EJ9 type R's. but after that they were just :tsktsk: . Stick with the lexus mate you are better off.
apparently FRP is supposed to be better then fibre glass but not a good as poly urethene, if you are after a poly bodykit JP Vizage do one here is is
Click here
also you can get the Greddy front lip for the GS300/aristo which is also made from polyurethene
try the guys on the austrailian forums aswell there is a guy called obsessed on this forum aswell who has done both 2JZ-GTE and 1JZ-GTE drops he should be a good source of information.
Mate i would just do the engine transplant 2k would get you a good condition 1JZ-GTE and gearbox. then all that would be need is to marry up the wiring and do engine mounts and slight engine modifications. once fitted you would have something thats is good for at least 200bhp and would be tunable to over 300bhp easily. Plus it would be different.
nah man if you wnat real power get youself a 1JZ-GTE engine with a R154 Transmission (i think) or do like matt and GPsports car did and drop a 2JZ-GTE with a Getrag tranmission. proper power 250 bhp+ running standard with potential for so much more.
you will need to check power limitations of the 1G-FE engine some guys here on the forum. i have heard some of the guys on here running 240 bhp on stock internals but i think anything higher requires more modifications. best to check.
with regard to superchargers TTE dont make them anyomre so you will need to sdource a second hand unit. they are few and far between at themoment and ghwh they do come up for sale they move very quickly. alternatively if you are prepared to wait dave @ prolex is have a new kit made using a Lyncolm Supercharger but as far as i am aware this will not be able for a while yet.