1uz VVTI coil upgrade?

[ShadeTreeWantaBe]

I put a JDM 1UZ VVTI in a 84 Supra. Running a stock/modified ECU from ALL4SWAPS out of Moscow. It runs fantastic.
Looking to upgrade the coils. I have the early bigger ones.
Found a lot of options for the 2&3 UZ. Does anyone have any bright ideas on coil upgrades for my engine?

 

[gloverman]

Maybe swap to the later small coils. Easy as.

 

[George_R]

If it runs fantastic - don't touch it
Otherwise you will fix it till it's broken

 

[dweinhart]

altezza coils (4cylinder) fit but you have to pass the wiring hurdle