I have heard many positive comments on the FASS system. I know that there were issues with early designs and not as many with the newer design. I have several friends that have them two of whom have had failure issues and didn't receive very fair customer support on the product.
I am not attempting to bash FASS - once the issues my friends had were corrected they are once again happy with the system's performance. However, the sour taste of their failure (one of which was towing his travel trailer w/family on vacation - OOC on side of the PA Tpk. for hours) has caused them to comment to me "if I had to do it over again, I'd look for a different system".
Those comments led me to be patient and look for an alternative product.
In all fairness to any product I suggest doing your homework on all that's available. Shop the systems, call the supplier/manufacturer, search the forums here and elsewhere (as you are doing here). Then make the decision that best suits your needs / that you feel comfortable with. Remember, you are "investing" in the range of $500 +/- depending on what you are looking to accomplish - ultimately correcting a poor design by mother Dodge.
Lastly - I, and several other folks I know, have had great success with the Glacier - Walbro pump - systems. See link in my signature "GFS-392 fuel system" as an option. I can say first hand, Rich @ Glacier is very, very, customer oriented, goes above and beyond to help design a system that fits your needs. And, he's there when you call

- if not he actually responds (most times same day :--) ) to voice messages.
The systems Glacier offers are not cheap, nor inexpensive, however, they are less (and IMHO better) than some that are out their boasting excellence. Additionally, something to consider, if you are the type that wear a belt and suspenders (hate to be caught with your pants down - side of the road no fuel psi) a spare Walbro can be had for approximately $100. 00 and takes about 10 - 15 (real time) minutes to change out.
Check the link in my sig, check other products, go to other sites, explore, do your homework, make the calls - it's your call. Happy hunting and best wishes on your choice.
All above is not to bash any product, only MHO and positive comments on product that I have been very happy with.
