If you dont have cooling issues i wouldnt change anything, but if you do, i recomend getting a bigger hd pepboys radaiator 100$ i paid, and it is an upgrade since its bigger, also my electric flex a lite was 240$ so for under 350$ you can upgrade that area, but i still see 11 sec cars with clutch fans, so not a necessity.
Rear disc conversion would be costly i imagine, i wonder if anyone has used the front slotted rotors from summitt? they might be an upgrade on its own, i know my car's brakes suk
good luck....
P.s, realizing you have a stroker in the works, id look into a stronger clutch, i sure wish i chose something better than this frpp hd i have, it's not holding well on stickies anymore, and not very old.
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Police package 5spd 90 Lx, Stock original motor, 3.27grs, BM fan, fms 10.5 clutch, D&D quadrant, and adjuster, ADS chip, 180 stat, mac cai, mac h-pipe, mac subframe connectors, ASP crank pulley, ripper shifter, 26x10.5 M/T sport pros welds. 246 hp according to analyzer
Race weight: 3,120
E.t-13.57 with 26x10.50's e.t. streets. 1.88 60'
mph- 99.92 mph