hello club hotrod im about to start construction of a petrol tank for my 38 chevy pu.its going behind the axle under the bed.making it out of stainless steel size approx 30 inches wide 22 inches long tapering from 4-9 inches deep.im looking for tips on its construction .what safety issues are there ,eg how close can i run the exhaust.if you have photos detailing your tank build that would be great thanx nunattax