GT40P and Trickflow Head Rocker Compatability?

[MrEL]

Hi all
Seriously considering swapping my GT40P heads over to a set of Trickflows twisted wedges.
http://www.summitracing.com/parts/tf...view/make/ford

The GT40P currently have a set of the Yella Terra 1.7 Roller Rockers on them.
Will The roller rockers swap over or will I need to buy a set of Trickflow rockers?

Just trying to work out what bits Im going to be needing before I commit to it and jump in feet first.
Cheers