350-400hp budget build 360 ideas???

The first problem is "Collage Budget" and the listed $2000 dollors to spend on this. Your not going to rebuild this for that amount. To get to the tagert amount of power with the money at hand, I suggest the following;

Shop the classifieds/Craigs list for used and inexpansive parts.

To use the TQ carb;
An Edelbrock LD340 and have the carb pad modified to work with the TQ. Add a 1/2 spacer under the carb. The TQ comes in 2 sizes, 800 & 850. Measure your primary throttle plates. If the 1.50 inchs each, you have the 850.

To use the RPM air gap, add a 750 cfm carb.

Cam, IMO a 340 cam will do it. Purchase this brand new along with the matched springs for the cam.

As Moper said, cheap headers into 2-1/2 inch exhaust

The heads are where the big expense comes in. Mill the heads a little bit and have them bowl ported. (AKA Pocket ported) with a bracket valve job. Add 2.02 intake valves if the wallet allows it.