No. My original plan was for a much milder build with a fairly hot flat tappet solid (which I still have) and a super six setup. But I suddenly realized I had some solid roller lifters left over from another project "that might work" so I tried them and I believe they will, so that's why I decided to go solid roller. I have a factory aluminum Super SIx intake and a nice 318 Carter BBD core. I MIGHT put those on the 170, since it will be some time before the 225 build is done. Then again, they might get sold. lol