Hi Mike,
a warm welcome to the forum
If you have done a major overhaul of a car then you,ll have no problem building a Roadster,
even if you can,t weld there are suppliers on this forum that can supply even a fully welded chassis,
This forum is a very friendly place & i,m sure that whatever questions you may have you,ll get helpful and constructive replies.
Have a good read thru all past threads or use the search facility for a specific topic for guidance & if you can,t find the answer then just ask away
best wishes for your build.
cheers
andy