power mods for ke tx3 n/a

[wht-tx3]

hey guys im new to ford forums, joined today.. i have a 1987 kc laser as my little run about and a 1987 ke tx3 for my little project i bought for $400, since i bought it i found a display folder with over 7 grand of receipts the previous owner has spent on it.. some of them are for full pedders suspension, urethane bushes and full new steering arms etc.. also a new motor was put in a few years back the only thing stopping me from driving it is i needa replace the head gasket... it has full extractors back exhaust with hiflow cat and lukey mufflers..

i was wondering other than air intake which is my next on the to do list after head gasket what could i do other than turbo to give it some more power?
thanks guys