Originally Posted by
Tourmalet
Most riders fit on smaller TT frames so you could fit a 48 cm P3 in theory.
Actually the designers at Cervelo were feeling giddy one day and they decided to make the numbers based on the road bike size so the numbers would be the same. so a 58 of any road bike should fit the same sized person as a 58 Cervelo TT frame.
That said, you will have to try it out.