Their iron heads are dart, but the aluminum are the brodix. Darts pro 1 are better but the ik200s are really great. I read an article that brodix (not some magazine) used the ik200s and a hyrdraulic roller cam and made 550 hp on a 355 with them with a great torque curve, almost what you would expect with a 383. And honestly the cam profile showed it should be completely streetable. I don't know the specs, I'll try and find the article again. But it's really what you want to pick.I'd pick a different cam as well if I were you. That is a freaking huge cam for a 355. Hell even in a 400. If you wanted a really fun motor use the 60104 voodoo cam its a 233/241 duration with the same lift as the xe-294 and is on a 110 LSA and use the ik200s. If you were to use the ik180s than use the 60103 or equivalent. To give you an idea my xe268 cam in my 355 doesn't start pulling until about 2300-2400 rpm, I mean it's hell below that but it really isn't fun until that range, and I have a 1800 stall with 3.73s. You would need some steep gears with a big converter to run the cam you want. And don't sweat saving. I'm 18 and have built my vortec 355 now, the previous 355, and now am working on my 406. All with time and saving. No one has bought anything for me and trust me it takes a while to save up but it's completely worth it to have the right set up the first time and turn that key and hear the motor run.
