To Buy XFI or not?

[XLexusTech]

For my 67 camaro Hybrid I plan on puchacing an OEM ls2 dropout from a GTO or Caddy. I plan on puting it in stock getting it driving till the next winter, then modding. Plans incude heads and Cam and possiable a turbo or superCharger eventually.

With that said does it make sense to go right for the XFI?

Or just this http://www.shopfbparts.com/servlet/Detail?no=159

Or just have the stock harness reworked? Keeping in mind I would wnat to move the majority of the eletronics inside and the GTO OE harness would need to be lenghtened.

So based on my research Stock harness rework + Vats reprogram 600.00

The above GMPP Nicer cleaner ready to run $850.00 But again only one tune.

Lastly XFI lots of felxability but Costly

XFI ECU 301000 2194.43
-XFI engine harness 301101 465.43
-XFI Injector Harness 301202 159.53
-FAST XIM Ignition Box and Harness 301311 687.44
-XFI Ignition Adapter harness 301311k 106.00
-CAN Retrofit Kit 301412 34.94
-XFI 25’ ECU cable 308014 133.00
-USB to Serial Adapter 307044 39.83

Total $3820.60

Thoughts appreciated