New CRII build, what kind of wiper assembly???

[Roylerumble]

I'm sourcing out all the parts to start putting together a CRII I bought. On of the things I'm missing is a wiper assembly. The manual says to use a wipers system from a 68-80 MGB RD or GT. I spoke to a MGB restoration parts retailer here and he can get me an assembly for about $375 Canadian. According to him, apparently there are a few differences in the motor gear for wiper sweep and the bezel for the cowl. The manual isn't the greatest when it comes to installation details. Has anyone got experience using the MGB assembly, and was there much modification or Classic Roadster parts that were used. Did it use the factory MGB rocker switch, or was there one on the Chevette column, or can I just wire up any 2 speed and park rocker one. Was it pretty much bolt in (with the exception of trimming the cowl spacer), or, should I consider buying a system like the one Shell Valley has for $495 USD?

Any info, parts, suppliers, suggestions would be greatly appreciated