[FDTT]

Ummm replace wear and tare parts.

Vacume lines
hoses
flush rad
replace belts
replace plugs
plug wires
every bushing in the car
change oil and filter
change diff fluid
change and bleed clutch fluid
change and clean brake fluid
replace cold start fluid
new thermo wax pellet
new TPS
tires
aftermarket water temp guage
shifter bushings
air filter
bulbs
wiper blades
rad caps

ECT ECT

The list is endless bud. The car is old, replace EVERYTHING you can afford to do. Then and only then modifie the car.