A couple of things for ya here. First: You say the 4.6 Mustang has a more attractive body. That all comes down to preference. I will agree that they are more sleek and newer looking....well....because they are newer. Second: It's a 5.0 NOT a 4.9!! Yeah, I know, technically the 302 is a 4.9508196L and Ford just rounded it up to 5.0 and that is what the 302 is known as, so please, refer to it as that. Because you may confuse some people when you call the 302 a 4.9. They might think that you are refering to the 300/4.9 straight six that Ford used in there trucks. Or they might think that you're smokin crack like I did at first.
If you guys are wondering how the hell I got the liter/cubic inch conversion. I've know it since high school. Take the c.i. (302) divide by 61=4.9508196 or take the liter (4.6) x 61=280.6 c.i. Let's just say I was board in studyhall so this kept me busy. I hate to say this but the Chevy 305 is the true 5.0. Do the math you'll see.