There is a list of things that will make your car better while not necessarily adding HP.
First things first: Repair any problems with suspension, chassis, etc.
Off the top of my head (and in recommended order)(some of which you may have already done/known about):
-Tune up to include fuel filter, plugs, plug wires, cleaning MAF, etc. etc.
-Remove the silencer (free and does help some)
-Brake upgrade to at least PBR dual piston calipers and rear disc. (Better yet Cobra brakes front and rear, but requires 17” or larger wheels)
-J-Mod the transmission (almost mandatory for the earlier transmissions)
-3.73 T/L differential (probably best bang for the buck)
Then start getting a little more serious:
-Explorer engine swap (probably the best bang for the buck in 94/95 MN12’s)
-Built transmission and higher stall converter.
Don’t get too wrapped up in the HP numbers and such. I know a lot of people that have great peak hp/tq numbers, but their cars are unreliable and generally a POS that you can’t rely on to drive.
IMHO a reliable car that you can walk out to on any day of the week, no matter the weather, and hop in and drive 1000 miles is a lot more fun than one that will lift the front wheels off the ground, but can’t be driven for 10 miles.
But that’s just me and my opinion.
97 Lincoln Mark VIII LSC (Chip'd, 3.73 T/L... so far... )
97 Ford Aspire (Slow, but getting 36 mpg (f'n Ethenol!!
84 F250 Dually w/6.9L Diesel (7.3L IDI pending)
73 Mercury Cougar Convertible w/351C 4V (Partially Restored)
69 F100 LWB w/460 Engine
76 Glastron Carlson 23' Jet Boat w/460 CJ Engine