Replaced coffin in 86 grand wag , but couple issues. First bought tgw replacement coffin,
1st, when installed and bolts tightened the poly tank is resting against the cross member,I don't think it should for reasons of wearing. Its tight and snug, not moving.
Hold down straps are good and tight around tank before install.
2nd, The end of coffin seems very close to rear end so up down movement looks as it would hit, maybe a finger or two of clearance between them.
3rd, drive shaft clearance along side of coffin seems very close to shield.
Does any body have pic’s or have gone through this problem..?