[Focus man. Focus.]

Hello everyone,
I am new to this site and I look forward to using it to make friends and gain knowledge about my 2002 Liquid Greay ZX5. I have a set of MOMO RS seats and Sparco bases to put them on and I have a question about installing them. I searched seats in this fourm and I couldn't see where this question was asked before so I think I am safe in asking it. The Sparco site says that their bases have a provision for mounting the stock belt receiver. Well it isnt there. Also under the stock seat there is a track position sensor(guess). I am 6'2" tall and my seat is usually all the way back. How important is this sensor? can I just leave it to one side and not worry about it. I think it only comes into play when the seat is in the forward most position. Has anyone here istalled custom seats, and if so what have you done with the sensor in question?

Thank you very much for reading my post and I look forward to reading your replies.