Howdy
I have made frame rails and sections for different vehicles and its not real hard for a good fab shop.
So in the worse case just take it to a local heavy fab shop and have them make you a new one.
Bad part about any option you go with is welding it in place make sure it is done properly with some preheat to avoid stress cracks on the weld areas. Also I would fish-plate the weld seams. Check the rest of your frame EXTENSIVELY if your front section is this rusted then chances are other parts are not far behind.
Good Luck!
1996 Chvy 3500 CCDWLB 6.5 Heathed, NO vac, marine injctrs, ARB bumper, BIG pipe, 3" lift, bright lights, bypass oil system.
1986 Chvy 6.2 M1009 blazer RAM AIR, Headers, Custom interior
2001 Chinook RV, V10 gas
1974 John Deere 1530 diesel tractor
1993 John Deere 455 Diesel lawn mower
1967 GTO, 1989 Honda Transalp
2009 VW Jetta TDI, flashed and piped, 6speed, fun car!
1998 6.5 suburban, stock, daughter's
1993 6.5 3500 CCSWLB GM8, Heathed, big exhaust, gauges, Son's
1984 6.2 ATS turbo 3500, SCDWLB - Son's
3 kids, 1 wife, 1 dog
Gunsmith, Tactics Instructor, Fabricator USMC 87-93 Semper Fi!