Is it that hard to....

Abdiel

if you don't do the fab yourself, i would think custom $ > kit $. aside from that cost, you may also have major issues that wouldn't usually occur in a kit.

case in point:

First top mount single turbo 370Z

XwChriswX

The downside to doing it piecemeal by yourself is the variances in parts/measurements/tolerances for each will vary. With buying a kit you're not only paying just for the kit/install but you're also paying for the R&D that went into the kit to make sure that it all works together as advertised. If I could buy all the parts and do it myself for $7k, and the kit is $10k, that extra $3k is fine because it's buying peace of mind that you know someone else already did the hard work and is giving you a completed project you know works.

But if you're feeling froggy and have the know-how to do it, by all means no one will tell you not to try.

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Bonnie - Stage 2, Audio build coming this fall!
R.I.P. Abby 3/29/10 - 3/30/14