the ex2 i hav not tried but from what i read on it i would never try that on aluminium .like jrow says its a hard wheel and it will load up. plus being that hard
will probably do more wrong than good on aluminium.
bear tex on the other hand i have used and i still use in some cases ,
they do wear down quite quickly but if you get them for free ,then it s not a problem .
i have one of those 6.1 intake to do next week, and from the last one i did i know thy take
lots of work to do but they have a very nice shine once done .
word of advice :
the casting on those is rough so you have a good quantity of material to remove
but if you remove too much then the porosity will start to show so when the rough surface is smoothed out , stop there and don t over do it ,
