Uhm.. What kind of sounds? What kind of kicks? There are literally billions (probably) of bass drum samples. What type of sounds do you want? One mans trash is another mans treasure!
I would be looking for some vinyl drum samples in that case. What you're looking for is not necessarily that in all cases but you may find it nice. Not sure where you'd find them specifically but I imagine a little research on your own part shouldn't take too long.
Here's a link to a thread that might lead to something nice;
For 90's hip hop. I kinda recommend Dimension Pro by Cakewalk. Although I don't know how good their DAW is, I actually like their synths a lot.
I have Dimension Pro and it has many phat beats in it and samples for playing in midi. Dimension Pro is a kind of sample/vst that you can record onto your DAW or copy to your DAW. Just record it to your DAW and then save the audio clip (sample). Also you can just play it standalone or play it live. While not most of the kits are easily playable live there are some that are better than others. There are many many samples and most are very similar and good for hip-hop like in general and 90's to even 2000's and 10's to me. It just takes work ofcourse to achieve a sound with EQ but these sounds are "mostly" ready to go anyways. Just add some compression (compressor).
Pluginboutique often times has great deals on Dimension Pro and Rapture. Right now there is Zeta 2 on sale. It's pretty dope for hip hop but it's more of a latest and greastest sound, not 90's.
To me Rapture is pretty cool for 90's hip'hop. I plan on using Rapture for my hip-hop, and yeh I like those cool ol' 90's hit beats too that were slightly less popular but still sic too. Rapture for 90's. Zeta+2 for 10's. Dimension Pro to me leans more like that song Romeo and Juliet or whatever it's called. SIlver platter and all that just ta'. "You get it"
You might be able to follow individual products. Like certain products and get E-mails. I think I did but atleast I had the weekend deal in my E-mail. Like I said "weekend" deal.