I have seen these in all 3 different configurations, P-5 small block, 99 hemi 4.90 bore space and 99'5.0 bore space. All the combos are very impressive and can work just fine with all the supporting parts. Guys complain about parts but there aren't actually too bad, especially in the 5.0 bore space. I've been running mine for years and have had next to nothing for part failures with rpm's close to 9,000. Lots of people call it the 'big dogs' and complain about price.... im selling mine complete from carbs to pan with all spare parts and a V300 racepak with all the data sensors for 43k....... How much you guys have into your street hemis?????? I personally believe guys are scared of them because they haven't had hands on experience running one. In reality they are a million times better then your second gen hemi. pushrod angles, piston weight, pushrod clearance, rocker arm off set and length, intake runner position etc etc, these things kick ass!.