That is one impressive SVO motor. 9s in a 4 banger from the 80s.
The racers kit from Zex has the purge, heater, a simple gauge, and the safety tube NHRA tracks like for $300. I think the purge and heater separate are $275ish. The filter from NX which fits the Zex kit just fine was $60 at Lethal Performance. Don't know if a filter would ever save my motor, but $60 wasn't much. The kit for my car was $650, so maybe the kit for yours is cheaper. The wiring for the "Traction control" RPM switch, nitrous management unit, and purge were easy. Still took me and one other 2 days to install everything.
2011 Mustang GT Auto
Zex 150-shot, CAI, Hearthrob H-pipe no-resonators, Flowmaster American Thunder axle-back, PSI Motorsports tuned, 4.10s, springs, shocks, struts, sway bars, adjustable panhard bar, adjustable UCA, LCA relocation brackets, LCA, and 275/60-15 MT Radial Pros.
12.236 NA before nitrous
11.719 with nitrous spinning through first.