use "OpenIV" to 

1.Replace the files :

"ig_michael.wtd" 
"ig_derrick_mc.wtd"
"ig_packie_mc.wtd"

in the root :

GTA IV/pc/models/cdimages/componentpeds.img


2.Replace the files :

"cs_michael_b.wtd"
"cs_derrickmc_b.wtd"
"cs_packiemc_b"
"cs_packiemc_d" 

in the root :

GTA IV/pc/anim/cutsprops.img
#######################
I used a timecyc in the screenshots it called "ALI Timecyc"

Link : https://libertycity.net/files/gta-4/210909-ali-timecyc.html



