Wiper motor 12v conversion

[Garyhenrich]

There are a lot of 12v wiper motor conversions available for the 48 chevy truck ranging from $149 to $249. Some say that they will not fit with the stock radio, which I do not have. Some say they clear the defrost vents, does that mean some do not? Some say they will clear the stock choke cable, have some people had problems with that? I thought I also read that some are not as strong as others... Any recommended buys would be appreciated as well as any suggestions on which units to avoid.