let me go find out how much bigger the lex afm is then the stock afm.
and quin, your not a very stock car as you have a 255, fpr, and an safc! so you CAN tune your car. this kid doesnt have all of that. if he goes with the same setup as yours, then he'll be fine! but if he just slaps it on with the stock fuel system it wont be pretty.
theres plenty of people who have melted a piston due to this, sure they haul ass for a day, and then there pulling the motor...
and eclipses come with 450's... i mishmash eclipse and supra stuff lately as thats all i've been working on...
this thread had all of the necessary info for the lex + 440 argument..
http://www.supramania.com/forums/showthread.php?t=43097&highlight=lexus+afm%2A
and about the washers, i guess i really should guess like that, but most washers arent very thick.
and heres a very long read, but a good one.
http://www.suprasonic.org/public_html/lexusriemer/lexusnotes.html