If your looking to drag and keep it cheap,then race a slower time bracket.Your gonna hear a thousand options..what it comes down to is how fast do you wanna go and how much are you willing to spend?Keep your stock cylinders and have them drag ported for 500 and up,depending on who you use,use a 4 mill crank,Also will need to upgrade carbs,another 300-600 depending on type,alky or gas...get a 4 mill crank and install yourself for about 500..after gaskets....domes and heads range from 275 up...for my porting I use Herrjugsracing.Kevin is a member here on the hq..There are alot of reputable guys on here also,Like fast,passion,and many others..Good luck and welcome to your Draggon!!!Lowbuckracing