I have done both types. Both were wrestling matches and tried patience to the max. If I had to do one again on a ‘37, my choice would be the abs option. Also, I’d not try to do it solo or figure out a way to use props held by clamps to hold one end in place for scribing trim/cut lines/curves. Props also help while doing the final installation. I learned on my ‘46, which has a two piece liner those props were a tremendous help, but still required patience and persistence working solo.
If Jim Carter doesn’t have one, it might be Bowtie Bits does?
