Blazer fuel fill neck fabrication measurements
 

Trying to get my 71 Blazer on the road after being stolen last year, fixed most of the stuff they did but after rebuilding the fuel system, reproduction tank does not fit. Had off road 38 gallon custom tank in it so no original fill neck. Does anyone have rough dimensions and bend distances? I can get basic fabrication down. If its not exact I can make adjustments in truck.
Thanks David