hello, yes we can still make the tweaked manifolds, they are just not as beefy as the full replacements due to the totally reworked plenum chamber. we finally decided to do up the tweaked stockers for some c32 guys and they will also work on the slk32 and srt6's (hench they are losted under all 3 cars on our website). personally im not going to pull off the full replacement manifolds and install the tweaked ones on my car, no sense in moving backwards as i know the monster gains we get from the full replacement mani's and can see from the flow data that they are not as efficient.

The tweaked mani's are a fairly new product for us and i do not have any dyno results for them yet, once i do it will be listed on our site in the product description. they are designed for the guy that wants to go faster but our full replacements are out of the mod budget. we spend a lot of time and money on the flowbench as we can see exactly what is going on thru the parts. you guys dont get to hear about the many parts i have designed that have not faired well on the flowbench since they never go to market. there is no cheating the flow bench, i include the bench's flow rate at the time of measurement so there isnt any room for vaugeness.

now back to the tweaked mani's, they are very nice, look great, very few weld seams, professionally ported and coated, just not the volume of the big dogs.