Thanks everyone for your input. Dave, I have downloaded TunerproRT and when I get a motor setup I will definitely use it. After reading what you all have said and doing lots of research I know I will definitely not buy a chip from tbichips.com.
My concern right now is building or buying a motor that is suitable for TBI and maybe a carb if I give up on TBI. I want a sturdy reliable motor with good torque and decent HP. It will be going in an 87 Chevy 4x4* that's lifted with 35's. Here is a list of what I am considering, I believe this motor produces around 260HP:

Chevrolet Performance#809-12530283 L31 HD Vortec motor for 96-2000 3/4 ton and 1 ton trucks.

Specifications:*1986-2000 style block, 4 bolt mains1pc rear seal nodular iron crankshaft
Powdered metal connecting rods
Hypereutectic pistons
9.4:1 compression Ratio.
Hydraulic roller camshaft: Int Lift .414", Exh Lift .428", Int Duration @.050" 191, Exh Duration @ .050" 196, Lobe Centerline-111
Vortec cylinder heads - 64cc, 1.94'' intake valve, 1.50'' exhaust valve
Also includes: Oil pan, timing cover, valve covers, harmonic balancer
$2029.00

Edelbrock#350-2116* Performer Vortec intake and a tbi adapter plate (I'll make the plate myself).
$193.

Summit headers SUM-G9006-9
1.5" primaries 3" collector.
$230

Let me know what you guys think about this so far. I appreciate any input.