So, first off, a tip! i used plastic tire irons to put the spring loaded clamp back on the replacement bellows. Worked great and just about no chance of piercing the bellows by using a screw drive or similar tool.
Easy enough to get the old bellows off, a bit of a hassle to put the new one on but much better than paying a repairman excess cash to come do it.
Overall, not a problem although i almost spilled my beer...