Rally 200 / PX engine and SIP Koso Rev Counter/Speedometer SIP 2.0

Hi all

I've got a kitted PX 210 Malossi engine in a 1977 Rally 200 (with battery) and hoping to fit the SIP Koso Rev Counter/Speedometer. 

It sounds like it would be a great way to keep an eye on my speed, revs and possible fuel level (I premix and use the reserve when needed).

Has anybody done this and is there anything I should watch out for?

It seems apart from the kit I'll need to purchase a speedo sensor and one for the fuel tap (will it only work with the SIP fast flow one?)

Thanks for any and all information.

Cheers

Matt Thomson