Tube Chassis Help

I was told before I purchased my Colt that 2x3 frame cars are very hard to sell.
And do you know if the round tube is 4130 chrome moly or mild steel?
If it's mild steel it's going to be heavy.
Then there are the ladder bars, most folks want a 4 link.
Cert really doesn't mean anything, has to be recertified if you are planning on going fast.
My old car would need a TON of updates to go fast today.
Lot$ of cash and changes to get to that point.
Good luck selling it.