funny, the ones I got were Moog brand and a direct slip in.....no, I did not record the Moog number....could be a early verse late Valiant application. Sorry to have informed you wrongly...my apologies and my bad for not writing this number down. I only had to cut for length to meet in the center of the spring eye. As for the front eyes of the leaf springs....these are not just slip in bushing...these are called a silent block...sleeve and rubber within another metal sleeve that is pressed into the spring eye...now if yours has been changed to push in bushing in the past....you may need to continue with such replacements. Removing the original spring eye is not a simple knock out might I add. As for poly, yeah tougher stuff.....I just rebuilt a British car front and rear suspension with all poly bushings, I know the trade off for better handling will be the resultant stiffer ride and contributing road noise transfer.