A couple of other things to be aware of which may also require use of appropriate words.
First, unless it has been drained routinely or in the not too distant past there is a good chance the drain plug will have rusted to the tank fitting. It may best be left alone but in any case, DO NOT attempt to remove it without securely holding the tank piece. Use large vise grips or something similar to bite into the tapered part while trying to unscrew the plug. If plug has rusted, the tank side will twist and break loose quite easily if not held. Once that happens there is no easy repair. I don't know if anyone has done it but if removed, some have suggested replacing the steel plug with brass to prevent future rusting.
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Can I assume that removing the straps at the rear of the tank will allow it to be pulled down and out?
Yes, tank should be free once the nuts on the "Tee" bolts are removed and straps release. If the tank has not been removed in many years, unless covered by undercoating (which is another issue) there is also a good chance the nuts have rusted to the bolts. Suggest a liberal dose of penetrating oil two or three times well before the removal attempt is made. The top of tee bolt is just placed in a saddle like pocket which can twist off or be very hard to hold if the nuts have rusted.
Believe some tanks and straps also used a separate antisqueek material under the tank in addition to that placed between the body and top of tank. If so, there is a good possibility the material will be so rotten it will need to be replaced. Perhaps someone will jump in with details but believe a poster here found a modern GM product very close to the original.
I can't speak directly to the 41 tank construction as to the filler neck attachment. Later tanks were one piece and based on the comments made above about maneuvering the tank out, it must be on the 41 as well.
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