thats what she head.. all my power is in my head...you can go as high as you want. around 11.0 is about the best comprimise for full utilization on pump gas. if you going to build for performance, of course you should have head work done. power is made in the heads.
im thinking to go for high compression pistons so if you may answer these questions
how much compression should i get ?
do i have to port my heads ? better or not a problem?
what is the problems may i face? heat, sounds?
full rotating assembly??? depends on power intentions, n/a will never need a crank. upgrade radiator and fan? the stock radiator cools well and wont need to be replaced. the stock fan moves a lot of air, more than most applications will ever need. and 350+rwhp N/A 2v 5.4,. good luck. it can be done, but it takes the right stuff to get it there.Your gonna want a new full rotating assembly in my opinion. prices range from 1400-2000 pending on brand and whos selling it.
P&P the heads you will gain alot out of them. If your staing N/A which I believe so get Patriot stage 2 heads or the Trick Flow heads. get better numbers
I dont think you will face any heat problems but upgrade the water pump to be safe. Maybe upgrade the radiator? and get a 180 thermo? stock thermo is 192 correct?
Upgrade to dual fans. But the shop you go to will know. I dont think you will run into heating issues though.
Right now I have a savings built up since Im looking at running a 5.4L swap staying N/A. Running stage 2.5 cams and Heads Port and polish.
CR will be around 10.82:1 maybe a little higher.
Best thing to ask is what power range do you want to achieve?
Mine is getting past 350rwhp. The shop that will do the swap said I should surpass that with the 5.4L swap with the bolt ons I also have as well.