R33 gtst leak in boot

[020king]

Hi everyone, I'm a new owner of an r33 gtst 40th anniversary edition. 

 

I was recently cleaning the boot and spare wheel well and discovered a leak. I imported the car from japan 5months ago and there are signs of repair to rust and leaks in the spare wheel. I have searched forums and people keep pointing to the boot seals or rear light seals. Iv checked these and they seem good. I have attached pics so any help would be grateful. Thanks 

[020king]

I have circled where the most wet part of it is and think this is where water is getting in from currently? 

[GTSBoy]

Squirt it with a high pressure hose in various places and see if it gets wet?

[WMDC35]

/\ get in the boot with a torch and watch for where it's getting in

[Count Grantleyish]

How's the taillights? It's the first thing I'd look for leaks followed by the panel where rear 1/4 meets the boot, mine leaked there on both sides and panel beaters has sealed these and now my LHS taillight leak. 

The joys of R33... 

[020king]

Thanks for all the suggestions, I have checked the rear 1/4 where it meets the boot on both sides it looks like someone has already put sealant on it and painted it. I will need to check the rear lights again and I think best way is to climb in boot and have a friend jet wash the boot from outside to see where its coming in from ???