How much poly did you need? The mounts appear to be about 3" long, and about equal in diameter for the lower ones.

 

I just filled some used front and rear mounts last night (just the gaps). I bought the one pound kit from McMaster-Carr (part #8644K11). I decided to mix almost a quarter pound at a time for each mount since I'm planning on filling my own front and rear mounts when I swap them out (which will be for sale soon). I had a small amount left after filling each mount. So, the one pound kit is only reliably good for 2 sets of front/rear mounts, with MAYBE enough left for one more, not sure.

I'm not sure how important it is, but if you don't mix all of it at once, I would recommend following the instructions and fill by WEIGHT, not volume. I used a postage scale to accurately do this.

Hope this helps.

 

I agree about filling by weight not by volume.

Hope those poly mounts work out for you bhmax I love mine.
-hype

 

Thanks Hype! I'll know in a few days how they do.