thanks Ricky. i talked to JML55 on this forum and he gave some pointers. i welded some holes from under dash. i found this link here as well that really helped.
https://www.hotrod.com/articles/1204...ng-a-firewall/
next job has been i flattened a piece of copper tube and used foil tape to stick it to under cab on floor to weld up all holes previous seats mounting holes . filled in all other holes not needed in floor as well.
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