What price range?, 1973 with 283" Options

[retrotech]

Please try to give me the high and low value,that you would give to the following.
1973 minimal rust, really.
FB rockers & bumpers, front hatchet job to open air for radiator mounted downward, fan above. Funky, but functional installation, needs ducting.
Shift is tight & smoth, no major leaks. Possible CV joint noise, 4 barrel, stock cast headers, with weird [need to change] exhaust system.
Decent interior, with cracked dash.
Brakes felt really weak, steering solid, drives good. Red paint that is usable, top to match. Engine sounds/feels strong, roller rockers, clutch feels too hard to depress?
Sarts right up, no smoke, drives pretty well for sitting, not be used, and well sorted. Aero rockers, rear shirt, with large spoiler.

Give me, with in reason the high & low resale value.
Is anyone looking for a 914 like this?

Thanks,

Retro