as DV said, dont look for the cheapest,
go to a real Taller which sells and mounts such systems on daily bases.
been quoted(but not myself, my buddy did, as he has a Taller himself and gets the Biz price/no Tax to pay, so he buys it to "resell" the system to a customer, me, but mounted by the original seller of course)
RD$ 55.760.- Pesos, incl all the work, mounted in the car to ride off.
the original price, as a normal customer without a reselling biz, would have been RD$68.000.- Pesos.
that's for a V8 in a 2005 Mustang.
i can imagine that prices vary a lot, depending what car/engine you wanna fit it in.
can't tell experience about it's use, as i am still on the "search" for the finally to take car, just getting prices for the stuff i wanna fix on it.
by x-mas i can tell more details, it will be my christmas present.
to get it under the tree, i may just mount a lil x-mas tree on the roof then, lol.
i was also checking with a number of friends, who ride on Gas i different models/brands V8's here, to find pro/con stuff about propane or natural gas.
the answers til now been 100% for Propane and zero for natural Gas.
the exact reasoning against the natural Gas is something i can still not tell,
still waiting for someone who tells me whats wrong/bad/good on comparison of both.
Mike