I don't know what make MMC used in the ARP4, but it really is lovely to use both at speed and when parking, in fact it is so nice I have replaced the 14" wheel with a smaller 13" one with no ill effects, and it makes getting in and out easier too.
Give them a ring [do not write or email, you will never get an answer], and ask if it is available as an after market fitment on your car.
My ARP4 was fine without power steering, albeit I only had the car for 3 weeks!
However, I found the power steering on my Roadster too light at all speeds and without sufficient "feel" for my liking. So, after a test drive of a non power steered Roadster with Suplex I opted to have the power steering taken off and suplex fitted. I much prefer it this way but accept "each to their own"!
I understand MR11MOG also found the standard power steering not to his liking on his new "ARV6" Roadster. However, he has had a quick 3 turn steering rack fitted to replace the 3.5 rack and is now very much happier.
