Rear spring front bushings Question

Hey Gals/Guys,

Want to change out the stock front spring hanger (eye on end of spring) rubber bushings on rear springs. Have velvets on the back end and was thinking I could just jack up (after removal of front eye bolt) until spring eye was below hanger. Pound out old rubber bushing and replace with what....? Stock Rubber or aftermarket poly any suggestions, part numbers etc would be great....anything I should be aware of before going at it??

Thanks,

jrc