I have no idea but I dont think they will work on a mav. I worked for a guy once that had a set on a Chevy II so I am pretty sure they are a different pattern.
Yeah it would never hurt to check. I know that some of the celicas had wheels that looked kinda like the ones on "bearcat" comets.
If you look through the pictures at the top of the pages there is a picture of a white MAverick with 4 lug Supra Rims that I just seen but now I cannot find it again, I think these are the same as the Celica Rims you are talkign about.
I had the Toyota center caps on my Maverick's styled steel wheels (grey magnums) and the "T" looked a lot like the Maverick's steer head.