You'll have to find out how to get some, but check out product # 3620 at
mill-max.com.
Die-Tech (
die-tech.org) makes leadframes, including for SIPs, and might give
you a substantial sample.  Their products 5000-5006 look exactly right.
These are from a discussion on Usenet a few months ago that I happened to
remember.
----- Original Message -----
From: "Tothwolf" <tothwolf(a)concentric.net>
To: <cctalk(a)classiccmp.org>
Sent: Saturday, October 05, 2002 2:08 AM
Subject: Re: SIPP to SIMM conversion
  On Sat, 5 Oct 2002, Lawrence Walker wrote:
  Does anyone on the list know a source for the
kits to change SIMMs to
 SIPPs. I believe you soldered the tips on. Or better yet a source for
 these hard to get 30 pin RAM chips. 
 I've seen SIP modules made out of SIMMS with bits of wire soldered to the
 tinned pads. Of course, it really wasn't a pretty modification. I've never
 seen the pins available anywhere, but a company like Mouser Electronics or
 Digikey might stock something suitable.
 If you are handy with desoldering, you could always retrofit a board with
 SIMM sockets instead of SIP sockets. There might be SIMM sockets available
 with pins that would fit into the SIP socket too.
 -Toth