strongest interior spray-glue ?

I use the stuff from keyston bros, it comes in 5 gallon bucket.

you need to use the DAP Welwood but it needs to be in the blue lable not the red, blue is 10x'S stonger

Weldwood HHR contact adhesive and a cheap gun

I agree on the weldwood, and U dont need to thin it to spray it. A cheap bottom feed gun will do the job, just spray both sides and wallah! Provides a nice strong bond!

Not the HHR weldwood it's spray grade and best part as time goes by it gets stronger and holds up against heat

If anyone is still around on this post, I use the Weldwood HHR on my headliner and it turned out great. Will I have the same results wrapping over the ABS plastic of my dash. If so, does the plastic needed to be prepped in any specific way? or will clean and scuffed work?