70 Chevy C 20 Longhorn

[G-749]

1st Chevy truck, steering column trashed,been cruising FB marketplace, Craigslist, nothing there. Just got Classic Industries catalog. Truck inoperable due to this and fuel tank sludge. Did get it to crank and move in forward n reverse in big garage. Been sitting 5years. Who makes best steering column for replace stock column. Thinking about getting on with 4 speed auto in case later upgrade will be 4speed auto tranny. Next question, remove fuel tank , clean, replace ? Got truck cranked by putting 1 gal gas can in battery box ,bypassing gas tank line and and run line from can to fuel pump. Ran most of can out,temp ,ammeter and oil pressure gages work. Need to add truck has 2 battery boxes , and a trailer brake, wiring looks sketchy, but won't remove until I find out if dealer installed. Speaking of dealer installed, truck has dealer installed factory A/C unit, also has power steering and power brakes. PO had the makings of a good project, but he changed nationality, went from good old Southern boy to a METHuanian. Lots of jacked up stuff on truck,was a full dresser with 2 tone red nwhite with all trim. Now is all red with no trim at all, red interior. Nice paint and body work. Have 3 photos of truck before he did all this. Rant over.
Please advise as what to do about steering column, gas tank situation.
Any and all input welcome.
1st post.
Thanks, and good luck on all your projects!!!