Late 70s ford van go kart

so I've been rebuilding this go kart for quite some time now, I've had it about 3 years and I just recently fully built an old manco frame with a predator 420cc stage 1 kit and all parts from I just need a seat and body mounts and a few cosmetics(bubble windows, clean up welds and paint) to finish it. I wanted to see if anyone could help me out and give me some ideas on what I could sell it for after its complete, ive got over $1100 into it and theres maybe 5 or 6 hours on the engine. So far I've hit a top speed of 64mph, its crazy fast and crazy fun! Thanks all and have a beatiful day! Snapchat-1993583337.jpg Snapchat-2117215343.jpg Snapchat-815344302.jpg