I have a good enough training age + sports back ground in soccer and hockey, and have gone through GPP, SPP etc. However I feel spec. end. work outside of meets (running 200s/400s in meets) hasnt been done enough… though I could be wrong… I do tempo… 100-300s at 75% speed and lately did some more 300-400s at tempo speed. I also peaked my times about 2 weeks ago at 11.3/23.39… then hit ti hard the last 2 weeks but I feel I can run 10.8-10.9 given my top speed, just the start and finish isnt too good.
Anyway 
do you feel in my case special end. work is needed and will it really help? or will doing speed endurance runs be enough?