Ok, I'll try to help but, a 350 is the easiest and cheapest motor that has been used because of that but, you do not want to do that because you want to be a little diffrent but, a 305 TBI is not the best of choices, it makes 165 horses ( stock ) and ur restricted as to what performance parts u can use cause ote computer or ECU that it requires, some cams are to radical, wiring, just plain not a good idea for any motor swap when power is wanted cheaply. What I suggest is getting a 283 or 327 truck motor from an old Chevy or GMC truck, I belive that ither of these motors are rare to be seen in a hotrod truck or car and 300 horses can easily be achived for both of these. If you still want the 305, get a edlebrock performer package and a set of 350 heads. The edlebrock performer package is the intake, 600 Cfm carb for your application and the cam. There are hotrods with 305's and have seen a few around lately. The performer package is tunecd to work togther so no to minimum tuning is needed.