ACK! Pistons reversed!

[joshhignight@techography.net (joshhignight@techography.net)]

   Well, got the head off and what do I find, the reliefs for the=
 valves are on the front of the pistons. I happen to glance at=
 the reliefs on the pistons in my beast block... in the back.=
 ARGH!

So, here's my question. Can I simply pull the pan, the rod caps,=
 and turn the rods (and pistons) 180* so that they are facing the=
 right way? Or do I have to pull the pistons out and off the=
 rods, turn the pistons 180*, then remount everything back into=
 the block? 

This is a 1.8 16v block, bored to 83mm, and stroked to 92.8 (2L=
 crank). The block has been clearanced for the stroke.

Thanks guys.

Joshua
(bummed out)