FAST intake size question ?
78mm = $7xx and 90mm = $8xx. The TBs are like $400-500 extra.
The only differenc i think is the upper part, which is swappable, like if you get a 78mm and want to upgrade later you can buy the top part to convert to 90mm. I'm pretty sure thats what it is.
The runners are higher than the LS6 so your FRC'S won't fit right afterwards. They can be "adjusted" to fit but it won't be very pretty.
All the hardware, holes, bolts, etc. is the same and supplied in the FAST kit.
Yes it's pricey . . . but worth it if you've got the money and making at least 450rwhp already . . . otherwise I don't think it would be worth the price until one has the accompanying mods to make that power
-William



