[X-8 On SAE-1000D?]

stick with the sae ang put it in .75 and you will be good just make sure that your port is measured properly

[Zv4 18]

i wouldn't push twice the rated power to any sub. Just me

I had my zv4 on a sq2200 and its was OK but now that it is on a 3500 boy it really shines.... doesn't get stinky at all for me and it actually moves now like it should be. I'm wired at 1ohm so I know I'm safe. If I had the d2 version to wire it at .5 then I would be a little worried. Its probably seeing close to rated wired at 1ohm anyways after rise and all that.

whats your box specs if you dont mind me asking

[Z v.4 18" w/ 11" spider & New Sundown Frame]

I love mine can't wait to get them both in.....