going to order roller today, figured id ask what anyone recomended, just got moter all finished up last week, 30 over j&e pistons, billet caps, champian c&c ported heads and intake, t& d rollers rockers, 70 throddle body, hemco upper plentium, precision front mount, 16930 non lock up converter, with extreme automatics stage 2 transmission, pt 70 bb turbo what you think 212? 218? i used a 218 flat tappet on a gn i had about 12 years or so ago and always had a idle problem with the car, but that was first car i built and didnt know all that much how to tune back then