yup id just use a proportioning valve off an older non abs s10 and accomodate the brake lines to match OR use one of these
http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2DG3910&N=700+4294922533+115&autoview=sku
its 109 bux but it has the BOO switch and adjustible rear bias...