would you do it?

[Suicide-D]

I currently have a 4.10 single track rear end. I have had to go to a 29" tire to bring my highway RPM's into a liveable range( i can hear the radio... )plus the turbo 350 I have needs the springs in the governor changed because it didnt have a 4.10 behind it originally. Ok with that said.... I have a 2.73 posi rear end in my parts truck, and a friend will sell me his 3.55 gear out of his camaro for $75.00, and my friend the "professional" will swap it all out for me for $125... I'm looking at $200 bucks for a posi rear end that I can run a normal tire with. My truck is lowered (the wrong way) and tall tires look stupid on it. I guess what I'm asking is there any major cons to what I will end up with. I will never tow anything with this truck... and when it's done I will have a fiberglass top over the bed...

Thanks