You can use it, everything will fit just fine.
The decreased engine weight will preload the springs less, so the front will ride a bit higher than with a V6.
Since the springs are progressive, the actual handling shouldn't be too far off (vs having it on a V6) since the spring rate will be less at the initial travel starting point vs that of the V6 - but I don't know how gradual the rate change is with shock travel, and it may not work as expected.
That said, I imagine it will still handle better than the majority of coilover equipped cars that haven't weight balanced and it should be PLENTY good if you are just doing spirited driving.
^^ This. However the reason most don't do it is because Honda doesn't warrant the product since you are not using it on what the specify it for, which is the V6. So therefore you are paying, what? $600 give or take a few extra bucks for a spring/shock combo, when you could just go the coilover route for a a bit extra money. But if you still prefer the HFP kit, go for it.