Best EFI harness and ECU for LS transplant.

[7firebird1]

Hello all! I am in the process of dropping a 5.3 LS engine in my 71 Firebird.
I am in search of a good plug and play setup that works good but not overpriced. I have looked at Holley and FAST and not sure which one to go with, or maybe there is another unit I should look at. Any help would be appreciated!

[Vince@Meanstreets]

Try searching PSI?. They seem to be affordable.

[Jr]

Factory Ecu with hp tuners has worked pretty good for a lot of people.

[XLexusTech]

I recommend PSI, veryy happy with mine

[PTAddict]

We've had very good success with OEM ECU and harnesses from Speartech on a number of swaps.

[Jr]

Speaking of psi...
http://secure.ultracart.com/catalog/PSI/
Looks like Charley's jackass.