88 SE

Well, I have the parts and the money, now I just have a hard choice to make so I thought I'd seek some advice.

I have a ported S5 engine and a stock S4 engine, the car itself is an S4.

I'd like to see 175 to the wheels ideally, just trying to get a grasp of which way will be the easiest route.

The easiest way, obviously would be a street ported S4 with ported manifolds as well. Would this be able to climb to the desired HP range?

I also do have the street ported S5 motor with low compression rear rotor, I also have its ECU, harness, and AFM as well.. pretty much the entire swap. The only hangup on this is that I hear for the most part it's impossible to get the S4 gauges and interior to work with an S5 ECU. True/False?

Im not looking to spend too much moolah on the whole thing and I dont want to go so far that I need a standalone, and I also dont want to go turbo because my horsepower goals just arent that high for the application ill be using the car for (itll never see a drag strip) I just want it to have some punch when exiting a corner

Any suggestions/ideas/comments would be appreciated.