Fuel tank filler, pressure gauge, fuel gauge and other questions!!!

[Dm1pfoy1]

Ok so I have the LMC blazer tank in my 72 Short bed fleet.

http://www.lmctruck.com/features/cb/CBGTN.htm

I have hole cut in floor of bed and "filler" neck that comes off at 45* angle from tank and would like to make a more proper finish for filler with a proper fuel cap and access door. What do you guys have I tried quick search and haven't found anything to adapt what i already have.

I also need a good in line filter. Anyone?

I want to add a fuel pressure gauge under hood perm mount. What is out there that you all like?

Also fuel gauge stuck on full have tan sender plugged in right and fuse is good. Do i just need to reground or will this tank never read right... Gauge moves very slightly 1/8-1/4 inch represents my entire tank so its hard to gauge (pun definitely intended) where its at.

I would also like to do a vac gauge. Under hood or in dash. Any pic's? (want to see options other than stock)