I want to change my sink and toilet ,i have no probs with doing the plumbing as ive done a lot of copper soldering but the prob the hot and cold pipes are lead piping and also the waste is. will i have to solder copper piping into the lead (any suggestions how to do so?)or is there some kind of connection i can put on, lead-copper?, and also the waste looks like lead to copper about 32mm would i b able to put a plastic connection on the copper many thanks any suggestions would b appreciated